View Source datastructures.js, line 460 Methods # async add(item, callback) Parameters: Name Type Description item * callback * View Source datastructures.js, line 479 # async contains(item, callback) Parameters: Name Type Description item * callback * View Source datastructures.js, line 504 # async remove(item, callback) Parameters: Name Type Description item * callback * View Source datastructures.js, line 521 # async size(callback) Parameters: Name Type Description callback * View Source datastructures.js, line 562 # async values(callback) Parameters: Name Type Description callback * View Source datastructures.js, line 552